'exotic' hardwoods--Environmental Impact?
krabbypatty
17 years ago
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woodswell
17 years agojubileej
17 years agoRelated Discussions
Earthworms As Introduced Exotic Pests
Comments (12)Effectiveness of diatomaceous earth against earthworms, if any, is at best transient. Probably a waste of good money. Most earthworms prefer soils of neutral to slightly acidic pH (6.0-9.0), although some prefer more acidic conditions. As I understand it, mosses prefer growing on firmly packed acidic soils with a pH between 5.0 and 5.5. Perhaps you can make a moss garden less attractive by creating an "island" of more acidic soil, optimum for mosses but less so for earthworms. However, acidiying the soil for the mosses/earthworms may be detrimental to other plants in that spot (e.g., the tree your mosses are growing under). There are no magic bullets. Gathering earthworms by hand and removing them, poisoning them, etc., is going to be a lot of work/expensive with no result in the long run. If the environment is desirable for the worms, their population will grow to the sites carrying capacity. If you can modify the environment so it is less desirable for earthworms but good for what you are trying to grow, then you have a chance. If you are in the northeast, the worms you may be struggling with aren't the introduced european lumbricids, but asian earthworms. These are very different beasts. They overwinter in the northeast as eggs that hatch out in the spring, develop to maturity and die in the winter. You can recognize them by having the clitellum (the swollen ring of segments on adults) further forward than on lumbricids, and they are EXTREMELY active -- they can flip right out of your hand if you pick them up. They tend not to burrow into the mineral soil, but burrow through and decompose the organic/litter layer. In Pennsylvania, there are reports of them hurting nursery operations by getting into containers of perennial plants and literally eating up the soilless potting media. No know solution....See Moreexotic invasion-o-rama...
Comments (21)Well, Gary, you have pretty much made my point for me. "Nothing much happened until these projects were undertaken." Meaning that before those projects were undertaken, no overdevelopment was underway, no rampant, unchecked growth, no overcrowding, no overpaving, no serious strain on the aquifer and no real threat to the creatures who were here before us. I agree that's true. And I wish the rush to develop Florida had been handled in such a way that those conditions were still prevalent in many more areas of the state. In my opinion, there are WAY too many people jammed into Florida today, and what has made that possible is the complete lack of foresight and planning. I don't really want to get "political" per se, either, and I agree that at this point we can't turn the clock back and undo very many of the things that were done in well-meaning but ill-advised this planet refforts to grow, grow, grow. But for me, Life on earth really ISN'T "all about people." I believe we are supposed to fit INTO the grand scheme of things on the planet, rather than tromp roughshod over it all, with no regard for other living creatures and their habitats. In other words, the more I learn about humans, the more I like animals. ;o) But truthfully, I'm willing to compromise. I know we are here to stay. I just feel we should each do our part, as best we can, to at LEAST not make things worse. And at best, to undo some of the disasterous money-making, land-grabbing, swamp-draining, canal-digging mistakes of the past. Some of those mistakes were made due to the expansionist ideas at that time in history, and some were made out of sheer greed and total disregard for anything or anyONE coming later. It's incumbent upon US today to try to decide which of these problems can be addressed and possibly corrected, and which we just have to learn to live with. We have to pick our battles wisely and try to do a better job of planning for future generations of both people and wildlife. Again, these are just my own personal thoughts on the matter, and not meant to start any kind of argument. But in my book, these three things are true: ecology is not a bad word, extremism on either side of the issue is counter productuve, and there should be plenty of middle ground to be explored when dealing with these issues. Marcia...See MoreHeronswood being moved to pa.!!!!!! oh nooooo
Comments (2)Shock. Denial. Anger. Grief. Acceptance. Going to Newbury Perennial Gardens to drown my sorrow. Typical of a big corporate buyouts. At the purchase time, the line is always that "we like it the way it is. If it ain't broke don't fix it." But in a few years, that always changes. Don't let the fox in the hen house, no matter what it promises before about not eating the chickens. You know it's the nature of the fox to eat chickens. Big businesses are about cranking as much profit as possible, and finding ways to make an already profitable business more profitable usually involves a very big change, as Dan Hinkley discovered. I hope he starts a new operation after the no-compete period is over....See Morethought for the day: impact of reintroducing turkeys
Comments (13)The extinction of the North American megafauna was almost certainly not due to any one event or cause - major factors likely included increased human predation; novel diseases introduced by humans and other animals crossing land bridges; and climate change (which would have altered flora, as well). No one would necessarily have been enough to wipe out the megafauna, but the combined effects were too much to survive. The bison was the largest herbivore to survive the event, and the grizzly the largest predator. There were much larger animals on this continent at one time. We also had an impressive range of big cats. Jaguars did once range as far north as Washington state and Nebraska, but no later than the Pleistocene (for those not familiar with geologic time periods, the Pliocene was from approx. 5 MYA to 1.6 MYA and the Pleistocene from 1.6 MYA to .01 MYA. From .01 MYA to the present is known as the Holocene). Jaguars were typically found where North American lions were absent (which had reached Peru by the Pleistocene). Both were also larger than their surviving modern day counterparts. We also had tigers in Alaska during the last 100,000 years! Sabertooth cats were present in many parts of North America during the Pliocene and Pleistocene. These included Dinofelis, Nimravides (over 3' tall at the shoulder), Machairodus (almost 4' tall at the shoulder), Homotherium and Smilodon (the famous La Brea fossils are S. fatalis). Smilodon populator, larger than the La Brea specimens, was the size of a large lion (4' tall at the shoulder). The cheetahs that populated North America (Miracinonyx) were larger than African cheetahs, and less specialized for speed; there were also European cheetahs that were larger as well and were believed to have had the heavier coats of a northern animal (like a snow leopard or Siberian tiger). They would have done fine in Wyoming in the winter. Alas, African cheetahs would not. Still, imagine what our continent would be like if these big cats were around today! Alan Turner's "The Big Cats and their Fossil Relatives" is a great (if technical) read about the living and extinct great cats....See Morejrdwyer
17 years agoglennsfc
17 years agokrabbypatty
17 years agojakkom
17 years ago
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